Sharp LC-32LE345T - AV and Media Troubleshooting

LC-32LE345T
6 – 5
Function Trouble (AV, Media)
AV no signal
Check if the AC cable is OK?
Check the CVBS circuit between the CN19
and U6
Check the software
Change a AV cable
Change Main PWB
OK
OK
OK
NG
NG
Can't detect USB Device
Check the Pin1 of CN2 for 5V
Check the circuit between the CN2 and
U6
Check the software
Change Main PWB
Change Main PWB
OK
OK
OK
NG
NG